Computer is an Electronic Machine which receives input from user, stored it, proceed it and give output which is useful for mankind. Modern computers are electronic and digital. The actual machinery -- wires, transistors, and circuits -- is called hardware; the instructions and data are called software.
A network is a group of two or more computer systems linked together. There are many types of computer networks, Including Local-area networks (LANs), Wide-area networks (WANs), Campus-area networks (CANs), Metropolitan-area networks MANs), home-area networks (HANs)
News has two priorities: it must be current, and it must mean something to people. A story about the environment and a story about the Oscars can both be newsworthy, for different reasons. On the surface at least, the objective of news is to inform the audience. It's the job of all the news media to tell people what's going on in their community - locally, nationally or globally. In this sense, the news media provide a valuable public service.
A mobile phone (also known as a cellular phone, cell phone and a hand phone) is a device that can make and receive telephone calls over a radio link whilst moving around a wide geographic area. It does so by connecting to a cellular network provided by a mobile phone operator, allowing access to the public telephone network. By contrast, a cordless telephone is used only within the short range of a single, private base station.
On a computer that is provided with a desktop kind of user interface, wallpaper is the background pattern or picture against which desktop menus, icons, and other elements are displayed and moved around. A wallpaper image can be in a JPEG or a GIF file format.
